ArticleBulletin of experimental biology and medicine2023
Molecular Genetic Characterization of Streptococcus pyogenes Strains Isolated from Patients with Various Manifestations of Streptococcal Infection.
Article in Bulletin of experimental biology and medicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed, 2 citations in OpenAlex.
- Carbon metabolism and niche adaptation inmSphere · 2026Review
- The Effect of Streptococcal Pyrogenic Exotoxin Type A (SpeA) on the Formation of Streptococcus pyogenes Biofilm.Bulletin of experimental biology and medicine · 2026Article
- Elucidating the role of group A Streptococcus genomics and pharyngeal microbiota in acute paediatric pharyngitis.Scientific reports · 2025Article
- Clinical Snapshot of Group A Streptococcal Isolates from an Australian Tertiary Hospital.Pathogens (Basel, Switzerland) · 2024Article
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In 82 clinical strains of Streptococcus pyogenes (group A streptococci) isolated from patients with various manifestations of streptococcal infection, emm-typing revealed 27 emm-types (n=77) with a predominance of emm-89 (n=15; 18%), emm-75 (n=9; 11%), and emm-1 (n=6; 7%); types emm-3, emm-12, and emm-58 (n=4; 5% each) were found with almost equal frequency; other types were less common. The superantigen genes speC, speG, speH, speI, speJ, speK, speL, speM, smeZ, and SSA were identified in S. pyogenes strains using multiprimer PCR; the genes of the superantigen SpeA and cysteine proteinase SpeB were detected using real-time PCR. All the studied S. pyogenes strains contained superantigen genes, and 98% of the strains had several (from 2 to 7) genes. The number of variants of these sets reached 37; 2% of the strains contained only one superantigen gene. The distribution frequencies of superantigen genes in the studied strains were: speA - 43%; speC - 38%; speG - 93%; speH - 13%; speI - 6%; speJ - 24%; speK - 13%; speL and speM - 11% each; smeZ - 98%; SSA - 15%. All studied S. pyogenes strains contained the speB gene. Our studies have demonstrated that the sets of superantigen genes of group A streptococci are characterized by pronounced diversity to some extent associated with emm-type.
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